Pump for inflating pneumatic tires.



PATBNTED FEB. 21, 1905.

D. ROWE. v PUMP FOR INPLATING PNEUMATIC TIRES.

APPLIOATIOK FILED JUNE 15, 1004.

UNITE STATES Patented February 21, 1905.

PATENT FFIQE.

DEOIMUS ROWE, OF VVANGANUI, NEW ZEALAND. ASSIGNOR OF ONE- HALF TO JOHN STOBERT, OF VVANGANUI, NEW ZEALAND.

PUMP FOR INFLATING PNEUMATIC TIRES.

SPECIFICATION formingpart of Letters Patent No. 783,138, dated February 21, 1905,

Application filed June 15,1904. Serial No. 212,743.

To aZZ whom, it may concern:

Be it known that I, DEorMus ROWE, a subject of the King of Great Britain, residing at Wanganui, New Zealand, have invented a new and useful Improved Pump for Inflating Pneumatic Tires; and I do hereby declare the following to be a full, clear, and exact description of the same.

This invention relates to an improved pump for use in inflating the tires of bicycles, motor-cars, and other pneumatic tires.

The object for which the pump has been designed is to provide a pump by means of which such tires may be quickly and easily filled with air.

In carrying out the invention an ordinary cylinder is provided with the usual plunger and plunger-rod and with an air-inlet at one end and an outlet at the other. The outer end of the plunger-rod is pivoted to the inside of a semicircular easing, into which the pumpcylinder is adapted to fit longitudinally and to be held by the springiness of its sides. One end of this casing is provided with means whereby it may be pivotally secured to a wall, and the remote or free end of the pump-cylinder is provided with similar means.

In use the pump-cylinder is turned out of the casing and its free end attached to a fixed point. The casing is also attached at one of its ends to a fixed point, when it will serve as a lever-handle by means of which the plungerrod may be drawn in and out of its cylinder, so as thus to work the pump.

In order, however, that the invention may be properly understood, reference will be made to the accompanying drawings, in Which Figure l is a plan of the pump. Fig. 2 is a side elevation of the same in the folded condition, part of the casing being broken away; and Fig. 3 is a side elevation showing the pump in position for use.

a is the casing of semicircular form throughout the main portion of its length and one end of which is provided with a longitudinal projecting rod 6, the extremity of which is pivoted to a screw 0 or other device by means of which the rod may be pivotally attached to a pivot one end of the cylinder to the inside of the casing.

The free end of the cylinder g is pivoted to a screw f or other device similar in design and purpose to the screw 0 before mentioned.

When the pump is not desired for use, the sliding blocke will he slid along to the end of the slot (Z and secured in that position. The cylinder Q will then be turned up on its pivoted end and inserted longitudinally within the casing 64, where it will be retained by the sides thereof. In this condition the pump may be carried about in the same manner as one of ordinary construction.

When the pump is to be used, the screw 0 is inserted into a wall or stand and the cylinder removed from the casing and the screw j also inserted into the wall or stand at a point below the screw 0. One end of the casing and one end of the cylinder will thus be pivoted to the wall or stand. The other end of the casing will be free to turn up and down upon its pivot, and this up-and-down movement will serve to reciprocate the plunger-rod of the cylinder, the pivotal connection of the plunger-rod to the casing and the pivotal connection of the other end of the cylinder to the wall or stand allowing for the necessary freedom of movement to the various parts. It will thus be seen that the casing a will serve as a handle for operating the pump-plunger, and the leverage obtainable thereby and the amount of movement of the plunger-rod may be regulated by adjusting the position of the sliding block a in the slot d.

is is the outlet from the cylinder g, to which a rubber or other flexible tube may be connected for conveying the air to the tire to be filled.

Instead of the screws 0 and jsuitable clamps for attaching the pump to a bicycle-frame may be employed.

What I claim as my invention, and desire to to secure by Letters Patent, is

In means for inflating pneumatic tires, a semicircular casing provided at one end with means whereby it may be pivoted to a fiXed point, a longitudinal slot in the top of the casing, a sliding bolt fitting in such slot and adapt ed to be secured at any point therein, and a pump, the plunger-rod of which is pivoted to the sliding block and the free end .of which is.

provided with means whereby it may be pivoted to a fixed point, substantially as specified. In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

.DECIMUS ROWE. Witnesses:

G. T. WIX, W. ALEXANDER. 

